wouldnt it make more sense to reduce the number of available classes (by only allowing basic set, superstrong/strong/medium/fast/intercity/local) rather than reducing the number of engines from one class available at the same time?

also i cant think too much about RV, there are too many extant problems... i just have one more week left of not working 50hrs a week and thought i'd throw together a small set to play with the trams outside my window